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SCALP NEVUS  A: The compound nevus is associated with ectatic hair follicle...
Published: 01 February 2024
SCALP NEVUS Figure 5-10 SCALP NEVUS A: The compound nevus is associated with ectatic hair follicles and follicular cyst-like structures. The intradermal melanocytes are densely cellular and separated by the elongated rete ridges. B: The melanocytes are arranged in nests and solitary units. They ... More about this image found in SCALP NEVUS A: The compound nevus is associated with ectatic hair follicle...
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<span class="search-highlight">CYST</span> WALL  A core needle biopsy specimen of a breast <span class="search-highlight">cyst</span> shows fibrosis of...
Published: 01 January 2024
CYST WALL Figure 2-20 CYST WALL A core needle biopsy specimen of a breast cyst shows fibrosis of the cyst wall and the attenuated epithelial lining, particularly where it runs along the edges of the core biopsy sample. More about this image found in CYST WALL A core needle biopsy specimen of a breast cyst shows fibrosis of...
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APOCRINE <span class="search-highlight">CYSTS</span>  A: Low-power view of a collection of apocrine <span class="search-highlight">cysts</span>.  B: Hi...
Published: 01 January 2024
APOCRINE CYSTS Figure 2-22 APOCRINE CYSTS A: Low-power view of a collection of apocrine cysts. B: High power demonstrates the cytologic features of apocrine metaplastic cells: abundant, granular eosinophilic cytoplasm with round nuclei and prominent nucleoli. C: Calcium oxalate is most frequent... More about this image found in APOCRINE CYSTS A: Low-power view of a collection of apocrine cysts. B: Hi...
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STROMAL REACTION TO RUPTURED <span class="search-highlight">CYST</span>  A: A core needle biopsy specimen shows f...
Published: 01 January 2024
STROMAL REACTION TO RUPTURED CYST Figure 2-21 STROMAL REACTION TO RUPTURED CYST A: A core needle biopsy specimen shows fibroadipose tissue with a chronic inflammatory cell infiltrate and stromal fibrosis. B: High-power view demonstrates histiocytes, lymphocytes, and plasma cells; while not defin... More about this image found in STROMAL REACTION TO RUPTURED CYST A: A core needle biopsy specimen shows f...
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MICROINVASIVE CARCINOMA  A: Low-power image of a <span class="search-highlight">cyst</span> with an adjacent smal...
Published: 01 January 2024
MICROINVASIVE CARCINOMA Figure 8-28 MICROINVASIVE CARCINOMA A: Low-power image of a cyst with an adjacent small, glandular proliferation. B: At higher power, the glandular proliferation appears somewhat infiltrative and the epithelial cells are atypical. C: A smooth muscle myosin heavy chain (S... More about this image found in MICROINVASIVE CARCINOMA A: Low-power image of a cyst with an adjacent smal...
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JUVENILE PAPILLOMATOSIS  A: Low-power view demonstrates variably sized <span class="search-highlight">cyst</span>...
Published: 01 January 2024
JUVENILE PAPILLOMATOSIS Figure 9-1 JUVENILE PAPILLOMATOSIS A: Low-power view demonstrates variably sized cysts, foci of apocrine metaplasia (lower left), fibroadenomatous change (upper right), micropapillomas, and adenosis. B: Intermediate power of the areas of adenosis, cysts, and micropapillom... More about this image found in JUVENILE PAPILLOMATOSIS A: Low-power view demonstrates variably sized cyst...
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<span class="search-highlight">CYST</span> WALL  On occasion, morphologic evidence of a mass is subtle, as in thi...
Published: 01 January 2024
CYST WALL Figure 15-5 CYST WALL On occasion, morphologic evidence of a mass is subtle, as in this case of a cyst. The attenuated epithelium at the edge of the core of tissue and the slightly denser fibrosis, are indicative of a cyst wall, which may be the pathologic correlate of an image-detected... More about this image found in CYST WALL On occasion, morphologic evidence of a mass is subtle, as in thi...
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BENIGN SQUAMOUS INCLUSION  A: Low power demonstrates a lymph node with squa...
Published: 01 January 2024
BENIGN SQUAMOUS INCLUSION Figure 14-17 BENIGN SQUAMOUS INCLUSION A: Low power demonstrates a lymph node with squamous-lined epithelial cysts. B: At higher power, keratinaceous debris within the cyst is easily appreciated. More about this image found in BENIGN SQUAMOUS INCLUSION A: Low power demonstrates a lymph node with squa...
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CORE NEEDLE BIOPSY FOR MICROCALCIFICATIONS  A: At low power, a collection o...
Published: 01 January 2024
CORE NEEDLE BIOPSY FOR MICROCALCIFICATIONS Figure 15-3 CORE NEEDLE BIOPSY FOR MICROCALCIFICATIONS A: At low power, a collection of apocrine cysts are seen, but microcalcifications are not immediately apparent. Careful inspection of the small cyst in the center of the field revealed calcium oxalat... More about this image found in CORE NEEDLE BIOPSY FOR MICROCALCIFICATIONS A: At low power, a collection o...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-05
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... of melanocytes displaying a lentiginous pattern, with extension into adnexal structures ( fig. 5-8 ). Foci of suprabasilar melanocytes may be seen. At least focal stromal fibrosis is common ( fig. 5-9 ). Some nevi of the scalp are also associated with ectatic follicular ostia, small follicular cysts, and thin...
Images
FAT NECROSIS  Intermediate-power view of an area of fat necrosis showing ch...
Published: 01 January 2024
FAT NECROSIS Figure 2-19 FAT NECROSIS Intermediate-power view of an area of fat necrosis showing chronic inflammation, multinucleated giant cells, and histiocytes infiltrating through the fibrous parenchyma and adipose tissue. Note the presence of a cyst-like area at the lower portion of the fiel... More about this image found in FAT NECROSIS Intermediate-power view of an area of fat necrosis showing ch...
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“ADENOMYOEPITHELIOSIS”  A: Low-power view of this core biopsy shows what ap...
Published: 01 January 2024
“ADENOMYOEPITHELIOSIS” Figure 7-43 “ADENOMYOEPITHELIOSIS” A: Low-power view of this core biopsy shows what appear to be areas of adenosis admixed with apocrine cysts. B: At intermediate power, it becomes apparent that the myoepithelial component is much more pronounced than is characteristic for... More about this image found in “ADENOMYOEPITHELIOSIS” A: Low-power view of this core biopsy shows what ap...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-15
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... ). Lesions are suspicious for nodular melanoma if they are elevated, firm, and progressively growing. However, these parameters have limited sensitivity and specificity. Amelanotic nodular melanoma may be confused with a range of other lesions, such as basal cell carcinoma, dermatofibroma, cyst...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 18
Published: 01 January 2024
10.55418/9781933477367-02
ISBN-10: 1-933477-36-9
ISBN: 978-1-933477-36-7
... inflammation, multinucleated giant cells, and histiocytes infiltrating through the fibrous parenchyma and adipose tissue. Note the presence of a cyst-like area at the lower portion of the field, and the absence of adipocyte nuclei. The clinical and radiologic differential diagnosis includes carcinoma. Rare...
Images
NIPPLE ADENOMA  A: At low power, a benign epithelial proliferation is appar...
Published: 01 January 2024
NIPPLE ADENOMA Figure 13-7 NIPPLE ADENOMA A: At low power, a benign epithelial proliferation is apparent below the epidermis of the nipple. The proliferation is composed predominantly of benign papillomas and apocrine cysts. B: Higher power of the area of papillary proliferation and apocrine met... More about this image found in NIPPLE ADENOMA A: At low power, a benign epithelial proliferation is appar...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-22
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... and only clinical manifestation of metastatic melanoma of unknown primary. A metastasis may present as a pigmented or amelanotic papule or nodule. It may be confused with a nevus, primary melanoma, or nonmelanocytic lesion (e.g., carcinoma, angioma, lipoma, cyst) ( 1 – 3 ). When the metastatic deposit...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-16
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
..., especially if there was a prior diagnosis of lentigo maligna. The clinical recognition of DM without pigment background is very challenging. Dermoscopic features are of limited value ( 12 ). Amelanotic DM may be confused with a scar, fibroma, cyst, or keratinocyte (basal cell or squamous cell) carcinoma...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 18
Published: 01 January 2024
10.55418/9781933477367-09
ISBN-10: 1-933477-36-9
ISBN: 978-1-933477-36-7
... papillomatosis. Table 9-1 FEATURES OF JUVENILE PAPILLOMATOSIS Principally affects women 20 to 30 years of age Approximately 1/3 of patients have a family history of breast cancer Characteristic gross appearance  Well-circumscribed mass  Multiple cysts and dilated ducts (“Swiss cheese...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 18
Published: 01 January 2024
10.55418/9781933477367-15
ISBN-10: 1-933477-36-9
ISBN: 978-1-933477-36-7
... radiograph. If there is concern that the calcifications present do not correlate with those seen on imaging, or if no calcifications are initially identified, additional levels through the tissue block should be obtained in an effort to reconcile the findings. If apocrine cysts are present, it is advisable...
Images
PERICARDIAL <span class="search-highlight">CYST</span>  Left: A pericardial <span class="search-highlight">cyst</span> (yellow arrow) involves the epic...
Published: 15 November 2023
PERICARDIAL CYST Figure 51-2 PERICARDIAL CYST Left: A pericardial cyst (yellow arrow) involves the epicardium (visceral pericardium) over the left ventricle. Above: The epicardial cyst (yellow arrow; from a left-lateral vantage) is seen in and among numerous pericardial adhesions, which are ofte... More about this image found in PERICARDIAL CYST Left: A pericardial cyst (yellow arrow) involves the epic...